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Uranus is a mystery hidden at the very limits of human vision. For centuries, we didn't know it existed. Thinking there were only six planets in the solar system, not eight. The sheer distance to this world of ice and wind means that even now we have only ever visited Uranus once. Every close-up photo you have seen of this swirling blue world comes from one mission, the Voyager 2 probe. But thanks to advances in new and powerful telescopes, its status as an enigma is now beginning to change. The vast expanse between us and this swirling world no longer holds us back from studying it. With incoming new revelations in one hand and fresh findings from old Voyager data in the other, the pieces are starting to come
together. Do Uranus's depths contain a sea of diamonds? Why has Uranus's atmosphere been steadily cooling over the last few decades? And how close are we to finding the last of its hidden moons? These are all questions we can finally answer. I'm Alex Mccoan and you're watching Astramm. Join me in this supercut as we explore the most upto-date information we have about the cloud veiled wonder that is Uranus and find out what secrets it's still holding on to. The first unique aspect of Uranus is its name. All the planets are named after Roman gods except for Uranus. It's named after the Greek god of the sky, Orurranos. The latinized version of this word is what we use today. Had they kept
the Greek version, it might have saved a bit of embarrassment as people stumble over saying Uranus in a polite way. It even has two ways to pronounce it as no one has been able to definitively agree on the matter, Uranus and Uranus. I'll stick with Uranus for the rest of this video for obvious reasons. So, without further ado, let's get to know this planet. The first thing to think about is its size. It is the least massive of the gas giants at 14.5 Earths compared to Neptune's 17 Earth masses or Jupiter's weighty 318. Its diameter though is just bigger than Neptune's at 51,118
km, about four times more than Earth's. Because the mass is spread out over a large area, the gravity on Uranus is only slightly less than on Earth at 8.7 m/s squared or about 89% of the gravity we experience on Earth. That would feel quite comfortable. Uranus is also very special in the way it rotates and orbits. It is the seventh planet from the sun, the second from last. It orbits on average around 19.2 two astronomical units from our star, which means it is over 19 times further away from the sun than our Earth. This varies throughout its year by 1.8 astronomical units, the biggest difference of any planet. But what is it about Uranus that makes its orbit vary so much? When it was first
discovered by William Herschel in 1781, astronomers attempted to predict his orbit. After some time though, they realized it hadn't followed their predictions and concluded that the reason was because there was another planet that had a gravitational influence on it. They mathematically predicted where this planet should be. And as a result, Neptune was discovered. I've done another video on that if you're interested, which you can check out here. Interestingly, the same theory surrounds this as yet undiscovered planet X or planet 9. Some far out objects in our solar system are not where they should be and theory suggests this is because of another planet that has a gravitational influence on them. The hunt is now on to actually
find this planet. Regardless of whether or not we find it, though, Uranus still has plenty of its own mysteries to solve. One of the biggest being not its orbit, but its rotation. Most planets rotate like a spinning top on the table of the solar system plane. Not Uranus. No, Uranus has fallen over and is rolling instead for large portions of its year. You see, its axle tilt is 97°. To put that in context, Neptune's axis at 28° is the next highest. To find out the reason for Uranus's weird axle tilt, I visited Michael Brightitmore, president of the Cleorbs Astronomical Society. Well, if I can just demonstrate using this little prop. When the solar
system was formed, it was formed from this great big disc of dust and gas. So everything in the solar system when this dust and gas solidified into the rocky planets and the gas giants and the ice giants everything was perpendicular to the plane that the planets eventually orbited in. So Uranus would have started out like this you know as did the earth and all the other planets. At some stage in the distant past, and probably soon after its formation, something hit Uranus and from going like that, it ended up with an actual tilt of about 98°. So, it's now revolving like, and of course, it's often described as rolling around the sun, and that's what it does all the way around the sun. But wait, what's this about a massive
object impacting into Uranus? Uranus's near horizontal 97.77° tilt has long been thought to be a consequence of a violent historical collision, but we've only recently started to uncover the full picture. Highresolution computer simulations published in the Astrophysical Journal in 2018 by Jacob Kegaris at Durham University and his colleagues have provided a more detailed picture of how this could have happened and the far-reaching influence it had for the planet. Their study ran more than 50 different impact scenarios in an attempt to recreate the Uranus we recognize today. The results confirmed that 3 to four billion years ago, a young Uranus was most likely dealt a glancing blow by
an object two to three times the size of Earth, probably a protolanet made of rock and ice. The impact would have occurred over a remarkably short period. In just a matter of hours, enough force would have been delivered to reorient Uranus's axis, knocking it to its side. And that set in motion a series of events that created the planet we see today. Some researchers, such as Matthew Clement and his colleagues in a 2026 paper published in the journal Icarus, even modeled out possible motions of primeval, now lost planets that might have perturbed Uranus's moons and sent some of them on collision courses with each other. It's a well explored idea that the early solar system may well have been home to more
planets than we see today. Though these ancient objects might have been jettisoned from the solar system due to unlucky gravitational encounters with other planets before they left. Though if they had passed within 0.02 astronomical units of Uranus, a large planet could have caused the moons there to become unstable, leading to a cascade of catastrophic collisions. The new paper suggests that perhaps this is the source of the early impact I mentioned earlier. And while certainly dramatic, this impact theory is not without its skeptics. Some papers, such as the 2022 astronomy and astrophysics paper, Tilting Uranus via the migration of an ancient satellite, look at the fact that Uranus and Neptune are actually very similar as proof that
Uranus's funny tilt must have some other explanation. After all, would such a large impact have only wobbled the planet's axis without changing anything about its mass, size, atmospheric dynamics, or spin rate? Those characteristics are all very similar between Neptune and Uranus. Spin rate, in particular, would be something you'd expect to see changing significantly in Uranus if it was suddenly impacted by a large object big enough to send it reeling. And yet Neptune's day lasts just 16 hours, about an hour shorter than Uranus. It's almost like something just gently tipped Uranus on its side without troubling other aspects of the planet. But what could have done this?
Finding all the pieces of this mystery has taken generations of scientists using observations from Voyager 2 and telescopes such as Hubble and KEK. Astronomy is often built by bringing different observations and expertise together. And Dwarf Lab, the sponsor of today's video, is bringing that collaborative spirit to everyday astrophotography with Star Party, a new feature for the Dwarf Mini. In Photonverse, I can browse a project like this one, review its target and shooting requirements, claim a task, and contribute. With Coast, dwarf mini owners capture the same target and combine their data into one shared result. With Coaosaic, participants
capture different sections of the sky and assemble them into a much wider view. The final image grows as more participants add their captures. It's a simple way for people in different places to create something bigger together. The Dwarf Mini is a lightweight, beginnerfriendly smart telescope, making it a thoughtful gift for someone who wants to start exploring the night sky. You can explore active star party projects in Photonverse by scanning the QR code or following the link below. And if you're thinking of getting a dwarf mini yourself, use the code Astramm at checkout for 5% off eligible Dwarf Lab products. But what have decades of observations and the models built from them suggested about the origin of Uranus's tilt?
According to the authors of the paper, a small satellite just 0.0017 times the mass of Uranus orbiting in the right way could do the job. Over time, if such a satellite shifted in its orbit, it could shift Uranus with it before falling into the planet itself, locking its final orbit into place. This would still have ended with an impact, but it would have been much smaller and less disruptive. Another paper in 2020 argues a similar idea, instead with a disc around the planet, one that has long since dissipated. But while it was around, it had just the right resonance to wobble Uranus significantly offkilter, like a
child getting dizzy from being pushed too much on a merrygoround. This would take it to 70° off tilt, with a final blow from a smaller object, completing the job and tilting it to the 98° axis we see today. Whether Uranus's tilt was caused by overenthusiastic spinning or devastating impact, such a large tilt certainly is not without impact. But it leads to, you know, a lot of considerations about its weather. The Earth's seasons and weather are all based on our axial tilt. You know, sometimes the northern hemisphere is tilt up towards the sun. That's our summer in the northern hemisphere and the winter in the southern hemisphere, you know. And as it goes round, we go past the equinox where it's neither
tilted towards or away from the sun. And then back round the sun to winter where the northern hemisphere is away from the sun. That's our northern hemisphere winter and the southern hemisphere winter. But it makes you wonder what on earth the weather would be like on Uranus that's tilted with often it its axis pointing towards the sun. It takes 84 years for Uranus to actually orbit all the way around the sun and back. Whereas the Earth does that in just one year. So for a lot of that orbit, its axis and its north pole is pointing directly towards the sun and the equatorial regions are getting very little. So since its discovery from William Hershel's back garden in 1781, only 2.9 uranian years have passed. and put it in
your calendars. The next new year is approaching in 2033. Of course, being so tilted also has some profound impacts on Uranus's day night cycle. Having such long years means that during its solstice, or the time of year when the sun is highest or lowest in the sky, only a very narrow strip near the center of the equator of the planet experiences day and night. During this time, the poles, on the other hand, get 42 years of continuous darkness followed by 42 years of daylight. During its equinox, which is the opposite of the solstice, the planet has more of a normal day night cycle. And for the record, Uranus left its equinox all the way back in 2007 and is now heading back towards a solstice.
Now, that's interesting because it was in that position when Voyager 2 actually flew past it. It had got its southern axis pointing directed towards the sun. And what Voyager 2 didn't see, which it expected, was a lot of weather patterns on the surface. You know, as we see all the time with Jupiter, we see these lovely bands and vortexes and the great red spot. But that's not what Voyager found at Uranus. It wasn't realized at the time that was a phenomena of this position in the sky. Later on, as it got a quarter of the way around its orbit, you know, in about 2007, the Hubble Space Telescope was looking at it and a lot more weather features
started to appear. It has winds of up to 800 m an hour. They're largely hidden by the atmosphere, but using different wavelengths such as infrared, you know, we are able to see these now, but unfortunately, Voyager 2 didn't get much of a look at them. It's true that Voyager had quite the case of poor timing when it came to imaging Uranus's weather, but this veil of tranquility has been lifted thanks to telescopes including KEK, Hubble, and the James Web Space Telescope, revealing a hidden dynamism. In 2014, the WM KEK Observatory in Hawaii detected eight huge storms on Uranus's northern hemisphere. Such was their intensity that for the first time ever, amateur astronomers were able to see details in the planet's atmosphere.
The largest white spot in this near infrared image from the WMEK [snorts] telescope is the brightest storm ever seen on the planet at this wavelength of 2.2 microns. It's around twice as bright as anything seen before. It accounted for 30% of all the light reflected by the planet in this observation. The cloud rotating interview in the lower right also grew into a storm spotted by amateur astronomers at visible wavelengths. Observations by Hubble over a 20-year period found that the polar regions become noticeably more meteorologically active as the planet moves through its uniquely long seasons. Despite the study lasting two decades, Uranus was in its
northern spring for the entirety of this time with the sun starting at equinox over the equator and moving toward the north pole as it nears summer. The Hubble team's results published in 2025 found bright cloud activity when the sun was closest to the equator with peak activity observed near the 2007 equinox. With the improvements in telescope technology, we have also been able to observe bands stretching around the planet much like the other gas planets. However, these bands are mainly visible in the infrared, which is why Voyager was only able to show us this in visible light. In these infrared images, you can also see small storms dotted all over. The haz and cloud structure
changed dramatically over the four observation windows with aerosols in the atmosphere thickening at the north pole as the planet approaches the summer solstice which it will reach in 2030. You can see this accumulation of aerosols in these images. The north pole changes from dark in 2002 to highly reflective in 2022 with complimentary darkening of the south pole as it moves into winter shadow. Together, this shows that sunlight is directly altering the formation of haze and clouds in the uranian atmosphere. The Hubble observations also identified circulation patterns that drive seasonal shifts, uncovering evidence of atmospheric gases sinking at the poles and upwelling
elsewhere. The persistence of this downwelling and the changes in climate are driven by Uranus's extreme axle tilt. This strange rotation and axle tilt means it is the only planet in the solar system that gets more energy from the sun at its poles than at its equator on average. For some reason though, the equator is hotter than at the poles. And no one really knows why. Uranus also experiences the most radical seasonal changes in the solar system, but it's not just the sun's light that drives this. A team at Imperial College London found that the uranian thermosphere, that's the outermost layer of the gas giant's upper atmosphere, is also heated by the solar wind. Again, this is the only place in the solar
system where this seems to happen. But as the solar wind's pressure has been dropping since 1990, Uranus has been cooling alongside it. This cooling is quite significant. Uranus's overall temperature has approximately halfed in the years since Voyager with Earth-based telescopes tracking a steady decline. It seems to be only Uranus that is affected by the solar winds in this way. No other planet in the solar system that we can monitor shows a similar consistent plunge. So why is Uranus affected and not the others? The key is distance. Magnetospheres keep cosmic particles away from their respective planet. But this protection can be strained by higher levels of particles coming their
way. The stronger the cosmic winds, the smaller the magneettosphere's bubble becomes. This in turn actually makes it easier for some cosmic radiation to reach the planet, warming it up in spite of its defenses. Despite these remarkable findings, Uranus is still significantly less volatile than its cousins Jupiter, Saturn, and Neptune. They are famous for their vast storms and swirling atmospheres. And that's because these are driven by internal heat left over from the formation of these gas giants. It's the slow release of this energy that creates the turbulence they are so well known for. Meanwhile, Uranus is cold, though in a messy, complicated way. When Voyager 2 flew by and recorded information about
Uranus's surface, this enigmatic planet was revealed to be even colder than expected, challenging our fundamental ideas of how planets form and evolve. At minus 224° C, Uranus's atmosphere holds the record for the coldest temperature on any planet in the solar system. But its internal composition means that Uranus is far from being cold all the way down. So what is it made of? It is believed to have a core just smaller than Earth of rocky silicut material which is surrounded by a mantle of water, ammonia, and methane ices. Although it's referred to as ices, this mantle is in fact very hot, reaching
almost 5,000° C. And it's much more like a fluid ocean than ice as we might think of it. So to call Uranus a gas giant is a bit disingenuous. It's certainly not gaseous all the way through. The atmosphere is in fact very insubstantial in comparison, only consisting of a total of 0.5 Earth masses with most of the mass of Uranus being in this core and mantle. The atmosphere comprises mostly helium, hydrogen, and 2.3% methane and then a cloud layer on top. It's this methane that gives Uranus its aquamarine or cyan color. And very interestingly, some models suggest that the pressure at the base of the mantle on Uranus is enough to break the methane molecules apart, which then compresses
the carbon atoms from the methane into diamonds. These diamonds would rain through the mantle like hailstones. The very base of the mantle could be a layer of a liquid diamond or carbon with solid diamondbergs floating in it. A captivating picture. But is it right? Voyager 2 data initially said so, but new modeling published in the journal Astronomy and Astrophysics in 2025 suggests that it's perhaps not quite the whole story. The researchers Luca Morf and Ravit Helled of the University of Zurich took an agnostic approach generating random models of the interior contents of Uranus and his ice giant neighbor Neptune. These were then compared to observational data and narrowed down accordingly with one major
surprise. The results showed that the possible composition of Uranus is much more varied and complex than previously assumed. For example, the rock to water ratio could be as low as 0.04, making the planet almost entirely water or as high as 3.92, making it the complete opposite, namely predominantly rock. This means that Uranus and Neptune have the potential to be rock giants instead of ice giants. And what's more, if the rock dominated option holds up, it challenges our fundamental models of solar system formation. But as the authors attest, this work is theoretical. We'll only know for sure by visiting the planet again, and more on that later. But for now, this raises a big question for me.
If Uranus's inner core is hot, why is it the coldest planet in the solar system? Can't that heat rise up to the planet's surface like it does on Neptune, Jupiter, or Saturn? Two recent studies, both published in 2025, revealed that Uranus does have its own heat, but only releases a tiny fraction of it, emitting about 15% more energy than it receives from the sun. By comparison, its neighbor Neptune emits more than twice as much energy as it receives. This extremely low heat flux is more than just another oddity for the oddball planet. It hints once again at that violent past with consequences not just for its climate and weather, but
its fundamental characteristics and even its moons. You remember I mentioned that a large protolanet the size of 2 to three Earths likely crashed into Uranus around 3 to 4 billion years ago. Working on the assumption that this idea is true, the simulations show that most of the protolanet was deposited in Uranus, creating a hot, high entropy shell in the icy interior. Highly disordered, high entropy materials don't conduct heat well. So, this layer acts like an insulation, trapping heat deep inside the planet and helping to explain the low heat flux and extreme coldness we see on Uranus today. This unique interior structure may also help explain Uranus's weird magneettosphere.
Usually, these invisible magnetic shields originate from the geometric center of a planet, its core. But that's not the case here. Voyager 2's original flyby discovered that its magnetic field is tilted by almost 59° from its rotational axis and offset from the planet's center by a third of the planet's radius. This magnetic misalignment creates an asymmetric magneettosphere with a magneetto tail that corkcrews into space for millions of kilome. This unusual placement also means the magneettosphere is much stronger at the north pole than at the south. When Voyager 2 flew past, the magneettosphere actually appeared to be much smaller than thought. And this has baffled scientists for decades. Recent reanalysis of the original data led by
Jamie Jasinski at NASA JPL and published in Nature Astronomy in 2024 finally provided an answer. When Voyager arrived, it was in the midst of some violent space weather that compressed the planet's magnetic field. Something that NASA couldn't have planned even if they tried. Voyager 2 really did have some awful timing. The new study instead suggests that the planet's magneettosphere is actually even larger and more active and variable than initially thought. The reason for such a strange magneettosphere isn't fully understood. One theory for this is the liquid diamond ocean could deflect the magnetosphere, but it could be that fields don't originate from the planet's core at all. Rather, they come from the
convecting mantle influenced by the deposits left by that ancient collision billions of years ago. For us at least, this has had one serious upside. The off-kilted magneettosphere leads to stunning sprawling auroras that do not align with the poles like on Earth, Jupiter, or Saturn. These phenomena have been imaged by Hubble in both the visible and ultraviolet parts of the spectrum. And by studying a decade of these images, scientists recently calculated Uranus's rate of rotation with 1,000 times greater accuracy than ever before. Initially, it was thought that Uranus rotates once every 17 hours and 14 minutes. Because its surface is not solid, however, some parts of the atmosphere rotate faster than others.
And due to high winds, some sections can make a full rotation of the planet in only 14 hours. As you might imagine, not being able to see the planet's true surface makes it quite difficult to precisely track Uranus's true rotation speed. However, the scientist technique revealed that the planet completes a full rotation in 17 hours, 14 minutes, and 52 seconds, 28 seconds longer than the estimate obtained by Voyager 2. And I simply couldn't miss out including this stunning representation. It shows infrared auroras which after 30 years of study were finally detected on Uranus in 2023 using the KEK 2 telescope. Uranus is home to some majestic auroray, but because of the way the magneettosphere is offkilter from the planet, they do
not stay at the poles as they are more likely to do on Earth. Instead, they sweep across the planet in complex patterns. When Web cast his eye towards the planet, it saw auroras at the magnetic poles. But fascinatingly, these magnetic fields had an impact on the coloration of the planet's clouds in other areas. Clouds near strong magnetic fields were bright blue, while in the darker regions were areas of reduced emissions and fewer ions. It seems that the electrical charge caused by these field lines influenced the temperature and chemistry of these clouds, leading to their discoloration. It's amazing to me that a planet's weather can be so impacted by something as innocuous as
magnetic fields. And yet on Uranus, this is undeniable, particularly in the wispy area above Uranus's visible clouds known as the ionosphere. Uranus as a planet is a fascinating place, but the story of Uranus would not be complete without taking a look at the objects it brings along for the ride. We'll fly away from the planet just a little bit now to have a look at its planetary ring system. Uranus, much like the other larger planets in our solar system, has rings. It was initially thought to have nine very dark and young rings, though this number increased up to 11 once Voyager arrived to get a closer look. They are aligned with its tilted spin axis. So during Voyager 2's approach 40 years ago, they appeared
almost like a bullseye. The rings are very young by solar system standards, thought to be a mere 600 million years old, much younger than Uranus, and they are believed to have been formed by the breakup of a small moon colliding with a meteoroid or a comet. They are composed of extremely small particles, the biggest being only 20 m across. Their most remarkable feature is how dark they are with an albido of less than 2%. They are made of the darkest material in the solar system. And what exactly that is yet unknown, but scientists think it could be particles of water ice mixed with organics or methane ice singed black.
Against Uranus's bright exterior, the rings are really difficult to discern. So much so they were discovered by accident in 1977 thanks to a star occultation, an event in which the star dimmed a few times on either side of Uranus as Uranus moved in front of it, confirming the presence of the rings. Uranus's rings range from a few km wide to roughly 100 km wide, and it's unclear why some of the rings are kept so narrow. Shepherd moons may help maintain the structure of some of them, but for most, the mechanics remain obscure. When Hubble was launched, it also had a look at Uranus, discovering two additional rings that had never been seen before, bringing the number up to
13. And the outermost ring is twice as far away from Uranus as the previously thought outermost ring. And excitingly, a rare stellar occultation happened again in April 2025 with Uranus passing in front of a star about 400 light-years from Earth. This led to a coordinated effort to observe Uranus like nothing done before. Led by planetary scientists at NASA Langley, an international team of over 30 astronomers using 18 observatories simultaneously trained their attention on Uranus for about an hour. It was the largest campaign ever organized and the largest simultaneous observation of Uranus since Voyager 2's 1986 flyby. The nature of an occultation is perfect for studying Uranus's atmosphere and rings.
The precision of the ring data, specifically the timings of each occultation have allowed scientists to determine where Uranus is in its orbit, updating its position by around 400 km. This is critical information for sending a physical mission, but I'll talk more on that later. This unprecedented coordination is just the beginning. Over the next decade, Uranus is set to pass between Earth and the galactic center of the Milky Way. Prime opportunity to carry out further occultation studies with the best ever conditions lined up for 2031. And of course, no look at Uranus would be complete without an exploration of its moons. As of now, Uranus has 29 confirmed
moons, two of which were only discovered in the last 5 years. Moon 28 is currently called by the rather catchy title S 2023U1 and was discovered in 2023 by Scott Shepard using the last Campanas Observatory in Chile. The most recent edition, its 29th moon, was made in February 2025 by using the James Web Space Telescopes near Cam designated S2025 U1 or Uranus 28. It does not have a particularly imaginative name either, which, as you'll soon see, is a departure from Uranus's other moons. So, let me know if you have any great suggestions for names in the comments. This startling array of moons is divided into three categories: 14 inner moons, five major moons, and 10 irregular
satellites. Romantically, the rest of Uranus's moons are named after characters from English literature. The major moons, Miranda, Ariel, Umbreel, Tatania, and Oberon, feature diverse compositions dominated by water, ice, and rocky material. Studies published in 2025, it was a very busy year for Uranus scientists, hint at possible differentiated interiors with liquid oceans sandwiched between rocky cores and icy mantles. And this number of moons could even be set to rise. By decoding the infrared data collected by the James Webb Space Telescope, it's become possible to figure out the composition of Uranus's two outermost rings, MW and new, named after letters in the Greek alphabet. While MW is a
water ice ring, one of only two water ice rings in the entire solar system, the other being a blue ring surrounding Saturn, its neighbor new is much dustier with extra carbonrich organic compounds. While the origins of MW are well understood as it was likely created from icy grains knocked off Uranus's irregular moon MAB by micrometeorite impacts, the explanation for where news dirt came from is far less understood. Or rather, scientists believe they have not yet spotted the moon that produced that extra dust. This could be a sign that another inner moon discovery might yet be in Uranus's future. But in the meantime, let's talk about each group in a little more detail. The inner moons
are connected with the rings of Uranus, some of which may have provided the ring's materials. The largest of these moons is called Puck at only 162 km in diameter. It is the only inner moon to be captured in detail by Voyager 2. Interestingly, these inner moons constantly perturb each other and the system seems very unstable. There's a good chance that some of them may collide again in the future. And as I mentioned, the five biggest moons in order of distance from Uranus, starting on the left, are Miranda, Ariel, Umbreel, Titania, and Oberon. Titania is the largest moon of Uranus and the eighth largest moon in the solar system at 1,600 km in diameter. Again, as can be seen, these are very dark objects.
Umbreel being the darkest. With the exception of Miranda, which is composed mainly of water ice, the rest are thought to be a mix of water and rocky materials. These moons may have differentiated interiors, meaning a core of rocky material with a mantle of ice. Between the core and the mantle could well be an ocean layer of liquid water. And interestingly, the axial tilt of the large moons is the same as Uranus. Meaning that during solstice, if you were to look at the sun, it would only ever move in a circle in the sky, never setting. During solstice, only one side of the moon faces the sun, meaning a constant daytime.
The final 10 no moons are irregular moons. They are likely to be captured objects and are much further out than the last of the big moons, Oberon. They vary in size from 20 km to the biggest cycllorax which is about 200 km in diameter. And the possibility of liquid water within some of these moons of course raises the tantalizing question of whether they are habitable for life. But again, only an actual visit could tell us that. Now, as I mentioned a moment ago, 2031 is set to bring with it the best possible alignment for viewing Uranus as it crosses the backdrop of the Milky Way. But that doesn't mean discoveries haven't been made in the favorable
conditions now that are leading up to this peak. The last few years have been a flurry of publications and activity looking at you 2025 focused on the strange seventh blue green sideways planet revealing it to be a dynamic world with a storied past and enigmatic features. So much has been learned since William Herschel stood in his back garden looking through a homemade telescope and that's despite Uranus and his neighbor Neptune being the least visited planet in the solar system. So even more discovery lies ahead still. The 2024 planetary science decod survey has made a Uranus orbiter and probe mission NASA's top planetary priority and the Chinese National Space Administration have also proposed a
mission to the planet with Tanwan 4. With the possibility of another visit on the horizon, scientists will need to look sharp as we've approached a critical window. 2031 and 2032 are optimal launch opportunities. Thanks to planetary alignments, a future spacecraft could get a gravity assist from Jupiter, shortening the journey by several years. And some studies wonder if that journey time could be reduced even further thanks to new rockets with heavier thrust capacity. SpaceX's Starship is the largest rocket ever launched. It has a 33 engine super heavy booster that could negate the need to get gravity assist from other planets entirely.
Rather than making the journey over the course of 9 years like Voyager 2 did or the proposed 13 years a Falcon Heavy rocket would need based on current flight plans, a Starship rocket could do it in six by going straight there. It would also be able to carry a much larger payload of scientific equipment. And if you're going all the way to Uranus, you want to make the most of the trip. Mission objectives are set to include mapping the planet's gravity and magnetic fields over time, studying the weather systems and atmospheric composition, characterizing rings, and investigating the potential habitability of its moons. So stay tuned. As you can see, although we understand Uranus
better than ever before, we are still far from understanding all of Uranus. This windswept world still hides many mysteries within its veil of clouds. Fortunately, the next chapter of Uranus exploration is being written as we speak. We've just recently passed 4,000 members on Patreon, and it's so exciting to see our community grow. If you want ad free videos and to join a community of thousands that love space, then sign up below so we can hopefully make it to 5,000 and beyond. Each new astronaut makes the constellation bigger, the conversation deeper, and the experience richer for everyone. I personally love
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